Evidence map›Paper›PMID 36817253›Full record

ArticleForensic sciences research2022

Comparing the accuracy of Demirjian and Nolla methods and establishing a new method for dental age estimation in northeastern Chinese children.

Dan Wen, Zhiyu Ding, Zhikai Tian, Wenshuang Wu, Weifeng Qu, Wei He, Chudong Wang, Jienan Li, Lagabaiyila Zha, Ying Liu

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Article in Forensic sciences research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

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4 citing papers in PubMed.

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10 authors.

Dan WenDepartment of Forensic Medicine, School of Basic Medical Sciences, Central South University, Changsha, China.ORCID https://orcid.org/0000-0003-3203-2229
Zhiyu DingDepartment of Orthopaedics, The Third Xiangya Hospital of Central South University, Changsha, China.
Zhikai TianDepartment of Oral Implantology, Xiangya Stomatological Hospital, Central South University, Changsha, China.
Wenshuang WuClinical Laboratory of Xiangya Stomatological Hospital, Central South University, Changsha, China.
Weifeng QuDepartment of Forensic Medicine, School of Basic Medical Sciences, Central South University, Changsha, China.
Wei HeDepartment of Forensic Medicine, School of Basic Medical Sciences, Central South University, Changsha, China.
Chudong WangDepartment of Forensic Medicine, School of Basic Medical Sciences, Central South University, Changsha, China.
Jienan LiDepartment of Forensic Medicine, School of Basic Medical Sciences, Central South University, Changsha, China.
Lagabaiyila ZhaDepartment of Forensic Medicine, School of Basic Medical Sciences, Central South University, Changsha, China.
Ying LiuDepartment of Oral Implantology, Xiangya Stomatological Hospital, Central South University, Changsha, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Dental age estimation plays an important role in the field of clinic medicine and forensic medicine. The Demirjian and Nolla methods are common scoring methods for dental age estimation but there was no research about the comparison of accuracy of these two methods in northeastern Chinese children. Hence, in this study, we compared the accuracy of these two methods to explore more suitable method for our studied population. We collected 535 orthopantomograms from northern Chinese children aged from 6 to 15 years and divided them into training dataset and testing dataset according to the ratio of 7:3. The dental age of training dataset were estimated using Demirjian and Nolla methods, respectively. The results suggested that the mean differences of these two methods were 0.24 and -0.40 years, and mean absolute difference were 0.65 and 0.59 years. Then to further improve the accuracy of dental age assessment, the new improved formulas and dental age conversion tables were established after analyzing the relationship between the sum scores based on Nolla method and chronology age in training dataset. According to the new method used in testing dataset, the minimum value of mean difference (0.00) and mean absolute difference (0.49) were obtained, which are largely smaller than that of Demirjian and Nolla methods. The new developed method and dental age conversion scales may be more suitable dental age estimation method for northeastern Chinese children.

Indexed as

Demirjian methoddental age estimationforensic odontologyForensic scienceNolla methodnortheastern Chinese children

Identifiers

PMID36817253
PMCPMC9930805

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